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Capillary tube with excellent lubricating oil droplet desorption performance and processing technology thereof

A technology of capillary and lubricating oil, applied in engine lubrication, mechanical equipment, coating, etc., can solve the problems of long growth cycle, large desorption particle size and poor desorption performance

Active Publication Date: 2022-06-03
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a capillary with excellent desorption performance of lubricating oil droplets to solve the problems of long growth period, large desorption particle size and poor desorption performance of existing lubricating oil droplets at the outlet end of the micro oil supply capillary. question

Method used

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  • Capillary tube with excellent lubricating oil droplet desorption performance and processing technology thereof
  • Capillary tube with excellent lubricating oil droplet desorption performance and processing technology thereof
  • Capillary tube with excellent lubricating oil droplet desorption performance and processing technology thereof

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Embodiment 1

[0039] In the capillary tube with excellent lubricating oil droplet desorption performance in this embodiment, the outlet end is provided with an inner tapered surface, and the angle between the inner tapered surface and the end face of the outlet end is 15°. The inner wall, outer wall and inner cone surface of the outlet end of the capillary are all coated with an oleophobic polymer coating. The thickness of the oleophobic polymer coating was 15 μm. The oleophobic polymer coating includes each of the following parts by mass:

[0040]

[0041] The processing technology of the capillary tube with excellent lubricating oil droplet desorption performance of the present embodiment includes the following steps:

[0042] S1: Select a 304 stainless steel metal capillary with a geometric size of Φ1.2×0.1, and use precision milling to process an inner cone surface at the outlet end of the capillary. The angle between the inner cone surface and the end face of the outlet end is α=15°....

Embodiment 2

[0048] In the capillary tube with excellent lubricating oil droplet desorption performance in this embodiment, the outlet end is provided with an inner tapered surface, and the included angle between the inner tapered surface and the end face of the outlet end is 60°. The inner wall, outer wall and inner cone surface of the outlet end of the capillary are all coated with an oleophobic polymer coating. The thickness of the oleophobic polymer coating was 50 μm. The oleophobic polymer coating includes each of the following parts by mass:

[0049]

[0050] The processing technology of the capillary tube with excellent lubricating oil droplet desorption performance of the present embodiment includes the following steps:

[0051] S1: Select a 316 stainless steel metal capillary with a geometric size of Φ1.0×0.1, and use the precision milling method to machine an inner tapered surface at the outlet end of the capillary. The angle between the inner tapered surface and the end face...

Embodiment 3

[0057] In the capillary tube with excellent lubricating oil droplet desorption performance in this embodiment, the outlet end is provided with an inner tapered surface, and the angle between the inner tapered surface and the end face of the outlet end is 45°. The inner wall, outer wall and inner cone surface of the outlet end of the capillary are all coated with an oleophobic polymer coating. The thickness of the oleophobic polymer coating was 33 μm. The oleophobic polymer coating includes each of the following parts by mass:

[0058]

[0059] The processing technology of the capillary tube with excellent lubricating oil droplet desorption performance of the present embodiment includes the following steps:

[0060] S1: Select a 304 stainless steel metal capillary with a geometric size of Φ1.2×0.1, and use the precision milling method to machine an inner cone surface at the outlet end of the capillary. The angle between the inner cone surface and the end face of the outlet ...

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Abstract

The invention discloses a capillary tube with excellent lubricating oil droplet desorption performance and a processing technology thereof.According to the capillary tube with the excellent lubricating oil droplet desorption performance, an inner conical surface is arranged at the outlet end of the capillary tube, and the included angle between the inner conical surface and the end face is 15-60 degrees; and the inner wall, the outer wall and the inner conical surface of the outlet end of the capillary tube are coated with oleophobic polymer coatings. The inner conical surface opening is used for stabilizing a main flow field at the outlet end and inducing stable growth and smooth desorption of liquid drops. And the oleophobic polymer coating is used for preventing the lubricating oil from upwards creeping and overgrowing along the outer wall surface of the capillary tube, so that the micro-droplets can be desorbed under the condition of smaller particle size.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering surface treatment, in particular to a capillary tube with excellent lubricating oil droplet desorption performance and a processing technology thereof. Background technique [0002] Long-life, high-reliability satellite platforms are my country's growing space strategic needs. Momentum flywheel is an important component of space actuator. At present, limited by the technical bottleneck of lubricating bearing components under space conditions, bearing components that have been in service for a long time often have problems such as decreased friction performance and unstable friction torque after the lubrication state deteriorates, making the design life distance of the momentum flywheel to meet the long-term requirements of the satellite. There is still a gap in life expectancy. The lubrication of the momentum flywheel has become a key factor restricting the technological advanceme...

Claims

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Application Information

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IPC IPC(8): F16N7/12C09D127/12C09D7/61C09D7/65
CPCF16N7/12C09D127/12C09D7/61C09D7/65C09D7/70F16N2210/14C08K2201/011C08L83/04C08K7/26Y02A20/204
Inventor 豆照良宋安佳刘峰斌程超阎红娟司丽娜杨晔李鸿
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY